ftp: don't use restartable signals

Refactor to not rely upon restartable signals (SA_RESTART),
possibly fixing intermittent failures with -q QUITTIME.

ftp transfers: handle EINTR/EAGAIN in copy_bytes(),
instead of relying upon restartable signals.

http/https transfers: Explicitly print an error similar to
progressmeter() when timing-out for -Q QUITTIME in fetch_wait(),
and set errno to ETIMEDOUT so that the warn() in fetch_url()
prints a more accurate error message.

PR/55857

make this compile again with -DNO_PROGRESS

branches: 1.22.32;
Clean up #includes in progress(1).

Sort them, omit needless ones, and add omitted needful ones.

Omissions revealed by pilfering the code and trying to build it on
Mac OS X. We ought to have a better way to reveal these omissions...

branches: 1.21.6; 1.21.8;
Fix numerous WARNS=4 issues (-Wcast-qual -Wsign-compare).

branches: 1.20.6;
update copyrights

Remove clause 3 and 4 from TNF licenses

branches: 1.18.4;
Turn off the alarmtimer before resetting the SIGALRM handler back to SIG_DFL.
Fix from dieter roelants <dieter.NetBSD@pandora.be>
Should fix PR 35630.

branches: 1.17.4;
const-as-const-can: make the "suffixes" pointers const, as probably was
intended, but done wrong originally (redundant const was removed
per PR bin/36280)

PR/36280: Christer Folkesson: Remove extra const

* Implement -s srcaddr; uses srcaddr as the local IP address for all
connections.
Based on code in the version of ftp that FreeBSD had before they
replaced it with lukemftp.
* Move error message handling into ftp_connect() rather than in the
caller, so that more specific error reporting can occur.
* Improve consistency of various warning and error messages.

Use the IEC 60027-2 2^n based "KiB", "MiB", "GiB", (etc)
suffixes for byte displays since we're using 2^n scaling,
instead of the SI 10^n based "KB", "MB", "GB" (etc).

Coverity CID 1447: Avoid buffer overflow.

Coverity CID 1448: Avoid static array overflow.

Revert back to using an int (instead of size_t) for holding a value that may
be negative.
Fixes progressbar display on terminals <43 columns wide.
Bug noted and solution suggested by Gavan Fantom.

copyright maintenance

Printf field widths and size_t don't always mix well, so cast to int.
Fixes build problem for alpha.

Use size_t instead of int where appropriate.

gratuitous whitespace cleanup (before someone else jumps the gun...)

branches: 1.6.2;
Fix compilation issues for NO_PROGRESS

Allow custom text printed before (left of) the progress bar from progress(1):

miyu# cat openoffice-linux-1.1.0.tgz | progress -z -p 'Bytes written: ' dd of=/dev/null bs=1m
Bytes written: 193 MB 13.83 MB/s 0+195211 records in
and:
miyu# progress -f openoffice-linux-1.1.0.tgz -z -p 'Bytes written: ' dd of=/dev/null bs=1m
Bytes written: 28% |****** | 57919 KB 14.12 MB/s 00:09 ETA

OK'd by lukem.

tweak copyright; the stuff jason did in util.c wasn't migrated to this file.

Crank dates on TNF copyright.
Remove UCB & WIDE copyrights; the progressbar functionality was
written entirely by me under the TNF copyright.

change a couple #ifdef's so /usr/bin/progress doesn't stomp all over
the tty if it's not in the foreground.

ok'd by jhawk.

branches: 1.1.2;
Abstract out progress bar support into progressbar.[ch], for inclusion
in external programs (conditionalized on -DSTANDALONE_PROGRESS).

The following moved from util.c to progressbar.c:
alarmtimer(), progressmeter(), psummary(), ptransfer(),
xsignal(), xsignal_restart()

The following moved from extern.h and ftp_var.h to progressbar.h:
STALLTIME, verbose, fromatty, progress, quit_time, ttywidth

make this compile again with -DNO_PROGRESS

Clean up #includes in progress(1).

Sort them, omit needless ones, and add omitted needful ones.

Omissions revealed by pilfering the code and trying to build it on
Mac OS X. We ought to have a better way to reveal these omissions...

branches: 1.21.6; 1.21.8;
Fix numerous WARNS=4 issues (-Wcast-qual -Wsign-compare).

branches: 1.20.6;
update copyrights

Remove clause 3 and 4 from TNF licenses

branches: 1.18.4;
Turn off the alarmtimer before resetting the SIGALRM handler back to SIG_DFL.
Fix from dieter roelants <dieter.NetBSD@pandora.be>
Should fix PR 35630.

branches: 1.17.4;
const-as-const-can: make the "suffixes" pointers const, as probably was
intended, but done wrong originally (redundant const was removed
per PR bin/36280)

PR/36280: Christer Folkesson: Remove extra const

* Implement -s srcaddr; uses srcaddr as the local IP address for all
connections.
Based on code in the version of ftp that FreeBSD had before they
replaced it with lukemftp.
* Move error message handling into ftp_connect() rather than in the
caller, so that more specific error reporting can occur.
* Improve consistency of various warning and error messages.

Use the IEC 60027-2 2^n based "KiB", "MiB", "GiB", (etc)
suffixes for byte displays since we're using 2^n scaling,
instead of the SI 10^n based "KB", "MB", "GB" (etc).

Coverity CID 1447: Avoid buffer overflow.

Coverity CID 1448: Avoid static array overflow.

Revert back to using an int (instead of size_t) for holding a value that may
be negative.
Fixes progressbar display on terminals <43 columns wide.
Bug noted and solution suggested by Gavan Fantom.

copyright maintenance

Printf field widths and size_t don't always mix well, so cast to int.
Fixes build problem for alpha.

Use size_t instead of int where appropriate.

gratuitous whitespace cleanup (before someone else jumps the gun...)

branches: 1.6.2;
Fix compilation issues for NO_PROGRESS

Allow custom text printed before (left of) the progress bar from progress(1):

miyu# cat openoffice-linux-1.1.0.tgz | progress -z -p 'Bytes written: ' dd of=/dev/null bs=1m
Bytes written: 193 MB 13.83 MB/s 0+195211 records in
and:
miyu# progress -f openoffice-linux-1.1.0.tgz -z -p 'Bytes written: ' dd of=/dev/null bs=1m
Bytes written: 28% |****** | 57919 KB 14.12 MB/s 00:09 ETA

OK'd by lukem.

tweak copyright; the stuff jason did in util.c wasn't migrated to this file.

Crank dates on TNF copyright.
Remove UCB & WIDE copyrights; the progressbar functionality was
written entirely by me under the TNF copyright.

change a couple #ifdef's so /usr/bin/progress doesn't stomp all over
the tty if it's not in the foreground.

ok'd by jhawk.

branches: 1.1.2;
Abstract out progress bar support into progressbar.[ch], for inclusion
in external programs (conditionalized on -DSTANDALONE_PROGRESS).

The following moved from util.c to progressbar.c:
alarmtimer(), progressmeter(), psummary(), ptransfer(),
xsignal(), xsignal_restart()

The following moved from extern.h and ftp_var.h to progressbar.h:
STALLTIME, verbose, fromatty, progress, quit_time, ttywidth